The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 02, 2011
Filed:
Feb. 02, 2005
Martin Grieβer, Eschborn, DE;
Andreas Köbe, Bensheim, DE;
Frank Edling, Yokohama, JP;
Vladimir Koukes, Darmstadt, DE;
Jörg Cunz, Bad Homburg, DE;
Lennert Gootjes, Hannover, DE;
Joachim Kohn, Hannover, DE;
Ines Runge, Hensledt-Uesburg, DE;
Maik Hofmann, Gaimersheim, DE;
Martin Grieβer, Eschborn, DE;
Andreas Köbe, Bensheim, DE;
Frank Edling, Yokohama, JP;
Vladimir Koukes, Darmstadt, DE;
Jörg Cunz, Bad Homburg, DE;
Lennert Gootjes, Hannover, DE;
Joachim Kohn, Hannover, DE;
Ines Runge, Hensledt-Uesburg, DE;
Maik Hofmann, Gaimersheim, DE;
Continental Teves AG & Co. oHG, Frankfurt, DE;
Abstract
Disclosed is a method of indirect tire pressure monitoring. The method includes: learning test variables (DIAG, SIDE, AXLE), which describe the rotational movements of the wheels; determining rolling circumference differences (ΔDIAG, ΔSIDE, ΔAXLE) from actually determined test variables and the learnt test variables; learning at least one torsion natural frequency ffor at least one tire from the oscillation behavior of the individual tires; determining at least one shift of the torsion natural frequency Δffrom at least one actually determined torsion natural frequency and from the at least one learnt torsion natural frequency; and combining the rolling circumference differences (ΔDIAG, ΔSIDE, ΔAXLE) with the at least one shift of the torsion natural frequency fin a joint warning strategy for detecting and warning of tire inflation pressure loss.